Clutch.



G. R. BAKER & C. E. TARONI.

CLUTCH.

APPLICATION FILED MAR.22, 1915.

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G. R. BAKER & C. E. TA RONL.

CLUTCH.

APPLICATION FILED MAR. 22, 1915.

Patented June 13, 1916.

2 SHEETS-SHEET 2.

Vii/wi s. m Waw.

STATES PATENT OFFICE,

GEORGE RALPH BAKER AND CHARLES; EDWARD TABONI, OF LONDON, ENGLAND,

ASSIGNOBS '10 JOSEPH BAKER To all whom it may concern .7

Be it .known that we, GEORGE RALPH BAKER and CHARLES EDWARD TARONI, subjects of the King of England, both residing at London, in tain new and useful Improvements in Clutches, of which the following is a speci fication. This invention relates to clutches, and the object is to provide a clutch by which a piece of machinery or other element may be placed in driving connection with a source of power at predetermined periods which are invariable.

The invention is of particular value'for use withv a plurality o machines working in timed relation or phase, in cases where it is desired or necessary to put certain of such machines out of action and to cause same to resume operationinexactly the same timed relation with the remainder as existed previously to the period of inaction, and as an example maybe mentioned machinery used in the preparation of dough for baking, viz. a divider, a primary prover, a molder and a final prover, it being necessary that all these machines shall operatein' phase and be capable of being individually or'severally placed out of action and returned to operative condition while still retaining said phase of movement. I

To these ends the invention broadly comprises a driving-member in operative -'connection with a gear-element or elements capable of axial rotation thereon and adapted to mesh with a second gear-element or elements on the machine-part or member to be actuated. During inoperative condition of the machine-part the first-mentioned gearelement describes an idle planetary motion around the second gear-element without imparting motion to the latter, but means are provided whereby such idle rotation of said rst gear element *is arrested, whereupon the driving power will be positively exerted from the driving-member through the gearelements to the machine-part, these arrest-.

ing means .bemg' of such a character that they will not become efiective until a given extent of movement of-the planetary gear element has taken place, the said extent being invariable, so that the moment of actuation of the machine-part isalways eifected at the same period of its cycle.

Practical embodiments of the invention,

England, have invented cer- 0 but incapable of revolution & sons, LIMITED. or LONDON, ENGLAND.

, c'nu'rcn.

Patented June 13, 1916.

Application filed March 22, 1915. Serial No. 16,139.

given as examples only, are illustrated inthe accompanying drawings, in which- Figure 1 is .a vertical section through one form of clutch constructed according to this invention, and Fig. 2 is a partial side elevation from the left hand side of Fig. 1. Fig. 3 is a vertical section through a second form of clutch and Fig. 4 is a section, partially broken away on line 44 of Fig.3.

In the construction shown in Figs. 1 and 2 of said drawings, the driving member comprises a sprocket-wheel or equivalent a" driven from any source of power as by means of a chain, and mounted loosely on the driving shaft 1) of the machine to be actuated. wheel 0 (sun-wheel) having an extended Keyed on said shaft is a gearboss d andwith which meshes a gear-wheel 1 e (planet-wheel) loosely mounted by means of a stub-shaft f at one side of the sprocket,-

wheel a so that as said sprocket-wheel a revolves the planet-wheel 6 will revolve idly around the sun-wheel '0 on the shaft b. The means shown for locking the planet-wheel. against this idle movement comprises a clutch-pin or stud gcarried by a disk It mounted by means of a spline-Z to slide longitudinally on the boss at of the sun-wheel elatively thereto. The said pin is adapted to enter an aperture 6 in the planet-wheel 6, but this cannot occur until said planet-wheel has made a certain number of revolutions depending on the ratio of transmission between said sun and planet-wheels, because the aperture 73 will not register with the pin g-u'ntil the proper extent of movement has taken place. The said pin may, as shown, be under control of the operator exerting pressure -for this purpose through a lever or fork (not shown) engaging a collar 9' on a boss is extending from the aforesaid disk-71.. r f

The size of the diameter of the pin g is such that it cannot enter between the teeth of the pinion e to block the same and thus no harmful result will occur as it merely engages the pinion teeth laterally, the pin not being effective until it enters the aperture i.

Inthe construction shown in Figs. 3 and 4, a designates the driving sprocket wheel mounted on the extended boss 6 of a clutch box 5 loosely mounted on the driving shaft b of the machine to be actuated. The said clutch box is connected to the sprocket wheel by a safety link a which engages at opposite ends a stub shaft 03 and a pin 03 on the clutch box and sprocket wheel respectively. The clutch box carries the air of gear wheels 6 'e (planet-wheels) the former of which is mounted on the stub shaft d and the latter secured to the former by means of screws 6". The planet-wheel-e meshes with and may revolve about a fixed gear wheel f (sun-wheel) keyed to a castellated sleeve 9 keyed to the driving shaft b and on which the clutch disk 72, is mounted to rotate therewith and have lateral sliding movement thereon. The other planet wheel e meshes with and may rotate about a fixed gear wheel f (planet-wheel) keyed to the,

boss of a timing ring 2' loosely mounted on the castellated sleeve 9 The planet wheels 6 6 thus rotate the timing rin when the machine is at rest, said ring ma 'ng a definite number of revolutions relatively to that of the sprocket wheel for instance one of the former to thirty of the latter. The clutch disk k carries a laterally extending timing pin "7' which on appropriate move-.

ment of the disk engages the face of the timing ring 2' and when said ring has rotated suificiently enters a slightly elongated aperture 2' in said ring and consequently allows a clutch pin k disk k to enter a driving slot 6 formed in the face of the clutch box 6 This latter pin 70 takes the drive of the machine and there is clearance enough in the slot to per- I mit the pin 7' to be loose in its aperture.-

The principle of operation of this construction is similar to that ofthe form shown in Figs. 1 and '2 and needs no further description.

It will be obvious from the above descrip tion that if,each machine constituting a unit of a plant is provided with Iesuch a clutch,

any one or more of such machines maybeplaced out of action and restored to operation without affecting the existing operative time relation of the various units.

What We claim as our invention and desire to secure by Letters Patent of the United States is;- r v 1. A clutch comprising a driving member, a driven member, sun and planet gearmg intermediate said members and means forarresting the planetary movement of said gearing at a predetermined period of also carried by saidmember in fixed relation thereto with which the first gear-element meshes, and about which it normally has idle planetary rotation and means efi'ective only after a determined extent of movement of said first gearelement whereby the idle rotation thereof is arrested, in order to positively transmit movement from the driving member to the driven member.

3. A clutch comprising a driving memher, a driven member, a gear-element mounted on the driving member for axial rotation thereon, a second gear-element on the driven member in fixed relation thereto with which the first gear-element meshes, and about which it normaliliy has idle planetary rotation and means e ective only after a determined extent of movement of said first gear-element whereby the idle rotation thereof is arrested in order to positively transmit movement from the driving member'to the driven member, the period of effectiveness of said arresting means being dependent on the ratio of transmission of said gear-elements and invariable for any given ratio.

4. A clutch comprising a driving member, a driven memberd an apertured plane tary gear-element mounted on said driving member for axial rotation thereon, a sungear-element mounted on the driven memwrrr, A. H. BENNETT. 

